Include end paragraph mark of previous paragraph in selection

[macropod]

sometimes the paragraph may contain more than one number followed by a right parentheses and this option affects each case.
For example:

The quick brown fox jumps over the lazy dog.
1) The quick brown fox jumps 2) the low brown fox flops.
3) The quick brown fox jumps over the lazy dog 4) the lazy dog.
The quick brown fox jumps over the lazy dog.

I only want a tab inserted after the first parentheses at the start of each paragraph and not each case after that, hence finding the end paragraph mark of the previous paragraph.

In that case, all you need is a wildcard Find/Replace with:
Find = ([0-9]{1,}\)) (*^13)
Replace = \1^t\2
and use 'Replace' instead of 'Replace All' to have Word ask whether the insert the tab in a specific instance. No macros required.