If you look at the list of positions which can be used to meet the position of responsibility requirement for Star and Life, you will see that assistant patrol leader is not listed there.
Star Requirement 5 - Leadership Position
While a First Class Scout, serve actively 4 months in one or more positions of responsibility (or carry out a Scoutmaster-assigned leadership project to help the troop):
You might notice that the troop leadership position descriptions which our troop uses have attendance expectations on them Some people have asked me how we enforce these. Well, we do not. These are not demands or requirements in our troop. Instead we use them to indicate to the youth what sort of time requirements are […]
I think that being elected by their peers is meaningful to many of our youth. The role of adults in these units is to train the youth leaders.
National Youth Leadership Training (NYLT) is an intense week long leadership training class for youth
We are particularly encouraging all of the new youth leaders to attend, but the seminar will be open to the whole troop. Hopefully some of the members will be inspired to apply for one of the open positions.
Help your Boy Scout youth leadership plan ahead by giving them a blank meeting plan template to fill in during their PLC meetings. Download a printable copy here.
Setting clear expectations for the youth leadership positions in a troop helps the youth members set goals. Some troops might also benefit from prioritizing the order positions are filled.