Hi Gilles,
Thank you for contacting us. The sort options can be found next to the search bar in mSecure 5 for Mac:
Please use this guide to go over all the basics of mSecure 5 on Mac: https://support.msecure.com/en/support/solutions/articles/36000071314
Note that if you are simply wanting to change the order of your groups, you can click and drag the groups in the Preferences to change their sort. Here's a demo using the types instead: https://streamable.com/87h3l
Gilles