I am a new BIAB user and am not very experienced in music software. I have an old Floyd Cramer country song that I would like to enter the chords for. It has a 12/8 time signature. I can not figure out how to set the time signature to the new setting? It only wants to use 4/4 or 3/4? Thanks for any simple advice you can offer.

You have to use 4/4. There are some song and style demos that are 12/8. You can listen and see how those were done. In the StylePicker, there is a category that contains 12/8 styles. From there, you can load a style and song demo.

Examples of 12/8 that you can search for are Georgia and What a Wonderful World.

Regardless, they are still 4/4 with triplets on each beat.