Model Builder - Adding Multiple Fields to Table

I was wondering if someone could help me with an issue I have been having in Model Builder. Part of my model required me to add three fields to a table. They all have different names and types. The obvious way to do this is to add the tool to the model three times. I was wondering if it would be more efficient to add them all at the same time.

The way I had been going about this was to create variables from the field type and field name parameters. I would then choosing the "This variable contains - A list of values options," for both of the variables. This seems to work except that the tool now creates three outputs instead of one.

Is there a way to do this or should I just be adding the tool to the model three times? I know about the batch version of all the geoprocessing tools. There isn't a way to add them to the model is there?

Thanks.