How to show one level down in slicer for Employee Hierarchy

[Sha]

My RLS is set up to return the Manager of the user and all employees under that Manager (this allows user to see how they stack up to others under same team)

pathcontains(tEmployees[Employee path],
Maxx(
filter(
tEmployees,
tEmployees[Email]= USERPRINCIPALNAME()), tEmployees[Manager]))

**My slicer is working fine for this, it shows Employee, their Manager and their reports.  This page shows metrics/no details.

I want to show a different slicer on a different page for the User and his reports (not show the one level up Manager detail)

If I could create this in a measure and display it in a slicer, that would be perfect... but it's not working.

pathcontains(tEmployees[Employee path],
Maxx(
filter(
tEmployees,
tEmployees[Email]= USERPRINCIPALNAME()), tEmployees[UserId])) 

I thought if I could get the USERPRINCIPALNAME() and compare to the rows, then it would work... but I must not be doing it right.

if(LOOKUPVALUE(tEmployees[Email], tEmployees[EmpUserID],

    PATHITEM(tEmployees[Employee Path],1,0)) = USERPRINCIPALNAME(),"True", "False")

and then I thought I could do for each level until it is "True"

Any help would be appreciated.  Thanks.

Update:  I was able to place a filter on my slicer... 

if(max(tEmployees[Email]) = USERPRINCIPALNAME(), "True", "False")

Now my slicer shows the person logged in but not the people underneath.  If I click on level 3, I get the data for the people underneath that person and when I click on Self, I get only his data.  I really want to see the people underneath that level in the slicer.