As you wrote . Or if this is only for punching check add this info in the RC Slab Design module only.
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This approach is not intended for verification of the punching. In such case you should decide on one of these instead:
- Make hole in plate and insert plate with another thickness
- Select FE and define plate with new thickness
- Or if this is only for punching check add this info in the RC Slab Design module only
In addition make sure you defined either a 'real' column (bar) under a slab or a support with the determined size (advanced properties of the support) and you do not have any beam in this location. This is necessary for the correct detection of the punching verification points.