How to Replicate ccomplicated Dynamic Row Level Security from Tableau to Power BI

Thanks for the reply from _AAndrade , please allow me to provide another insight: 
Hi  cruncher ,

Here are the steps you can follow：

1. Create calculated columns in both tables to combine [Region], [Vertical], [Business Unit].

Table1_Con =
[Region]&"-"&[Vertical]&"-"&[Business Unit]

Table2_Con =
[Region]&"-"&[Vertical]&"-"&[Business Unit]

2. Modeling – Manage Roles – Filter data -- Place the following formula .

When applying to multiple users, you can replace " bicar " with USERPRINCIPALNAME().

var _name="bicar"
var _user1=
SELECTCOLUMNS(
    FILTER(ALL('Table2'),
    CONTAINSSTRING('Table2'[USERS LIST 1],_name)=TRUE()),"user1",[Table2_Con])
var _user2=
SELECTCOLUMNS(
    FILTER(ALL('Table2'),
    CONTAINSSTRING('Table2'[USERS LIST 2],_name)=TRUE()),"user2",[Table2_Con])
var _user26=
SELECTCOLUMNS(
    FILTER(ALL('Table2'),
    CONTAINSSTRING('Table2'[USERS LIST 26],_name)=TRUE()),"user3",[Table2_Con])
RETURN
IF(
    'Table1'[Table1_Con] in _user1 ||
    'Table1'[Table1_Con] in _user2 ||
    'Table1'[Table1_Con] in _user26,
    TRUE(),FALSE())

3. Result:

Best Regards,

Liu Yang

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