# Opening Framing – Edit
### Trimming Joist
**Trimming Joist –** in this tab you will find all settings for creating trimming joist needed for the opening.
**Trimming Joists are symmetrical –** switch this *OFF* if trimming joists should be different on the left and right sides.
*Example, two trimming joists are created with predefined distance:*
### Custom Join
**Custom Join** – is a multi-functional dialog where user can define rules for joins including size, count, position, rotation, spacing, alignment etc. All these rules can be saved and used in other framing configurations or shared with other users. This type of dialog is used frequently in our products, so [here you can read more about **Custom Join detailed description**](https://docs.besmart.software/3d-modeling-and-design/wood-framing/common/wood-metal-framing/custom-join)
### Custom Header 1, Custom Header 2
**Rotate by Slope –** rotates an element according to the roof slope.
**Move for Skylight** – if ticked, then the header will be moved to make a real skylight frame.
### Custom Top Support
**Custom Top Support** – place where user can control opening top support.
### Trimmer
*Example 1:*
*Example 2:*
**Trimmers are symmetrical –** switch this *OFF* if trimmers should be different on the left and right sides.
**Extend Sill\&Header** – extends Sill and Header if **Bottom Plate to Sill**, **Header to Top Plate**, **Sill to Header** is selected near **Trimmer Type**. Also check if **Trimming Joist** is inserted.
*Example with wood:*
*Example with metal:*
**Extend Header** – extends the Header if **Bottom Plate to Header**, **Bottom Plate to Sill**, **Header to Top Plate**, **Sill to Header**, **Split Sill to Header** is selected near **Trimmer Type**. Also check if **Trimming Joist** is inserted.
*Result:*
**Insert Support Stud/Joist if extended** – inserts support stud/joist to the opening if **Extend Sill\&Header** is switched on.
*Result:*
**Extend Trimmer if it connects to Top Support and Trimming Joist is missing** – extends trimmer ends if there is no King/Trimming Joists and **Trimmer Type** = **Bottom Plate to Top Plate Support**.
Also top support needs to be without extended ends:
*Result when is switched OFF:*
*Result when is switched ON:*
**Trimmer Type** – defines how the trimmer is positioned relative to opening Sill, Header, Top Plate, Bottom Plate, Top Plate Support.
*Example: Trimmer goes from **Bottom Plate to Header**:*
*Example: Trimmer goes from **Bottom Plate** to **Top Plate**:*
*Example: Trimmer goes from **Bottom Plate** to **Top Plate Support**:*
*Example: Trimmer goes from **Sill** to **Header**:*
*Example: Trimmer goes from **Sill** to **Top Plate**:*
*Example: How to make a double trimmer:*
### Top/Bottom Cripple Trimmer
**Trimmers are symmetrical –** switch this *OFF* if trimmers should be different on the left and right sides.
*Example 1:*
*Example 2:*
### Cripples
**Top and Bottom Cripples are Equal** – if ticked OFF, then two tabs appears which allows to control top and bottom cripples separately.
**Define Top Cripples Studs/Joists by Spacing** – if ticked ON, then you can predefine **Spacing Type** and **Spacing of Top Cripple Studs/Joists**. If unticked, then the software calculates the distance between top cripples automatically. You just need to define a **Number of Top Cripple Studs/Joists**.
**Spacing Type –** defines different spacing arrangement options:
{% hint style="info" %}
**Note:** ***Define Top Cripples Studs/Joists by Spacing** will work if **Automatically Align Opening Cripples with Joists** is switched OFF near **Common Settings**. If it is ticked ON, then the cripples will be aligned with the main framing joists.*
{% endhint %}
***Automatically Align Opening Cripples with Joists** is switched ON:*
### (in Wall+M, Floor+M, Roof+M)
**Diagonal Placing of Top Cripple Studs/Joists** – select this option if you would like to use diagonal top cripples.
**Diagonal Cripple Panel Type** – possible options: **Warren** or **Pratt**.
**Offset in Connections** – distance between diagonal cripples.
Sample **C+U Special Warren** diagonal cripples above the window:
### Offset
**Opening Top, Bottom, Left, Right Offset** – offsets frame in all preferred directions.
*Example with wood:*
*Example with metal:*
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