Distinct count with filter and total

Hi, Dtrain 

I have been busy recently, sorry to reply you late. You need to use sumx() and summarize() function to calculate toal.

Like this:

Total In-store =
SUMX (
    SUMMARIZE (
        'Table',
        [Date],
        "a",
            COUNTROWS (
                (
                    DISTINCT (
                        CALCULATETABLE (
                            UNION (
                                CALCULATETABLE (
                                    DISTINCT ( 'Table'[AcceptedByCusId] ),
                                    FILTER ( 'Table', 'Table'[AcceptedByCusId] <> BLANK () )
                                ),
                                DISTINCT ( 'Table'[CreatedByCusId] )
                            ),
                            'Table'[Auction Type] = "In-Store"
                        )
                    )
                )
            )
    ),
    [a]
)

Other measures are similar, you can refer to my sample below.

Did I answer your question ? Please mark my reply as solution. Thank you very much.
If not, please feel free to ask me.

Best Regards,

Community Support Team _ Janey