If your required filter doesn't appear in the Other Filters list you will need to download it from EndNote Filters Webpage
MAC users - Select your required filter, control-click and choose Save Linked File to "Downloads". The filter will now appear in your "Downloads" drag the filter file into your Filters folder. Located HD\Applications\EndNote\Filters
For the Joanna Briggs Institute database use Ovid Nursing Database (OvidSP)