To add your ID to your profile in myscouting.org follow the steps below:
1) click on either the words "My profile" (outined in red on 2nd page) or "Update My Profile."
2) You should get a screen that looks like 3rd page (see section outlined in red).
3) Click on the down arrow to the right of the council box to select our council name.
4) Type in your membership ID in the Member ID box.
5) Click on the add button.
To see a screen shot showing the exact steps click here