Creating a filter. Can I use unlimited Parameters within one filter? What am I overlooking? It will only filter my chosen parameter with a Start & Finish. Three lines total.

Are you using client or web? You can use a number of parameters, but depending on the details of those parameters and if they are looking for different items in the same topic, there is a chance they cancel each other out and give back no results. When setting up filters, make sure to carefully select "all" or "any" and how you set up the filter with "and" and "or".

example

Display all rows	Parameter	Is	Value	High Value
Filter Item: (Any of the following)	(Any of the following)
Where	(All of the following)
Where	Start	is less than	CD
And	Finish	is greater than	CD
Or	(All of the following)
Where	Start	is greater than	CD
And	Start	is less than	CD+2W