Echoing what
@CJ_London already said.
You can have two versions of this. A main form that you select a job title and then a subform to add names. And or a main form with Names and then a subform to select job titles. I like to make a single form with some code so I can switch between the two
Here is an example of the first form, but the reverse is almost identical in design
1. I did not use a bound main form instead I used the combo box that pulls Titles. However, I could bind the main form to the titles table instead
2. The subform is linked to the main form by the titleID and the titleID foreign key in the subform.
The subform in this case is bound only to the junction table
3. A combo lets you then store a member id into the junction table
This is the general tricks regardless of how you vary it. A junction table will have two foreign keys (memberID, titleID). One of those keys is the link to the main form so it gets populated automatically by the subform. The other foreign key usually gets populated by the combobox pull down in the subform.
Try to repeat what I did and build the same thing reversed. Have a combo to pick a member and then a subform to select the Titles. If you can do thiat you can then put buttons on both forms to switch back and forth between forms. Allowing the user to select members and enter titles or select titles and enter members.
I would not try to allow adding members or titles here. This form then gets complicated. I would have pop up forms to add members, and a pop up form to add titles. You can do that combined but that gets confusing and complicated.