Constraints donnot work

Hello, New to this Modeling Program, forum and IPad 14.6, but plenty of Mac experience and design as well. Working my way through second tutorial and cannot use constraints. Hopefully its something silly ……any help is welcome.

Hi there, welcome to the forum!

To make constraints active you will need to first select more than one sketch element as shown in the short screen recording below.
To select multiple sketch elements, click and drag over them or click on them while holding down the shift key. On the iPad press the Pencil slightly on the screen and drag over items or simply tap on the items using the Pencil.