If you wish to hide/show sections of your document based on certain conditions then you can surround that text with consitional merge fields (IF, ELSEIF, ELSE)
Syntax
In order to create a conditional statement in your document template you will need to create a merge field using the following format:
[[*IF {FirstName|pt=Client|rn=*} == "Steve" *]] Hello Steve [[*ENDIF*]]
The * denotes that we're doing something special while the IF starts the conditional statement
[[*IF
The standard merge fields from your merge field list should be included in braces (otherwise known as "curly brackets")
{FirstName|pt=Client|rn=*}
Any static values should be included in quotes and there should be an operator in front of that static value
="Steve"]]
The text that you wish to display should follow the conditional start field
Hello Steve
Finally, you will need to include a conditional field stop
[[*ENDIF*]]
You can add any number of ELSEIF options for additional conditions and and ELSE section as a catch-all if all prior IF/ELSEIF conditional are false
Example
The Client's Nickname is: [[*IF {FirstName|pt=Client} == "James" *]] Jim [[*ELSEIF {FirstName|pt=Client} == "Robert" *]] Bob [[*ELSE*]] [[FirstName|pt=Client]] [[*ENDIF*]]