How to have drop-down field next to text box?

I want to have a dropdown field show right to the next of a textbox, for the users/employee modules. Basically, I’m adding a skills text box, and want to have the skill levels drop down right next to it.

I’ve seen this behavior out of the box in SuiteCRM via the Quotes module. The shipping tax section at the bottom of edit view does exactly what I want. A dropdown right next to text box.

Any ideas?

Hmm anyone know if this is doable? Thanks in advance!!