Hi Pranav,
we can do this by following ways:-
1)OR(logical1, logical2…) and replace any number of logical references with the expressions you want evaluated.
2)AND(logical1, logical2…) and replace any number of logical references with the expressions you want evaluated.
3)ISPICKVAL(picklist_field, text_literal) and replace picklist_field with the merge field name for the picklist; replace text_literal with the picklist value in quotes. text_literal cannot be a merge field or the result of a function.
4)NOT(logical) and replace logical with the expression that you want evaluated.
Eg:-
AND(
OR(
ISPICKVAL(Type, “Client”),
ISPICKVAL(Type, “Client – Group Contract”)
),
ISPICKVAL(Customer_Management__c, “”)
)