In ArtiCAD menu bar->Special->iChoose System...->Handle Selector...

i-Choose Permutation Selector

Each handle permutation is a set of handles assigned to certain types of door. For example, you may choose handle A to be assigned to the base unit door and handle B assigned to the wall unit door. and so on for all the door types (though there are Articad restrictions that will be enforced automatically).

Adding a Handle Permutation to the i-Choose Set Up Process:

Deleting a Door Handle Permutation From the i-Choose Set Up Process:

Deleting All Door Handle Permutations From the i-Choose Set Up Process

Note - The door handle permutations you have chosen are persistent, even after restarting Articad. There is no need to repeatedly select the same door handle permutations on subsequent i-Choose set ups.