How to give similar values a unique numbering in an extra column

[RK3]

I am just learning to program with Alteryx.

I have a question about adding a column with a unique numbering for each group of similar values in the column 'Name' 

My table I have now looks like this:

ID	Name	Goal Type	Feasibility
121	John	x	0.99
121	John	x	0.58
343	Martin	x	0.99
343	Martin	x	0.80
343	Martin	x	0.83
343	Martin	y	0.99
343	Martin	y	0.99

I would like to have an extra column that numbers the names. Each time a new group of names comes up, the count starts from the start. 

ID	Name	NR	Goal Type	Feasibility
121	John	1	x	0.99
121	John	2	x	0.58
343	Martin	1	x	0.99
343	Martin	2	x	0.83
343	Martin	3	x	0.83
343	Martin	4	y	0.99
343	Martin	5	y	0.99

Does someone know a tool and code that helps add a unique count  for each name as in the example above?

Thank you! 

[cmcclellan · Accepted solution]

Does a running total work for you ?

[jdunkerley79]

I suggest a multi row formula tool

You can specify the Group By so it restarts every time a new group comes up

[RK3]

Yes! Works perfectly. 

Thanks