All the settings applied will be used as a base for all your promotions (based on followers, locations, hashtags and targets). You can try out various combinations of campaigns and settings in order to define the most resultful ones and to clearly understand your TA.
In our blog, we have some real examples of how different tools can be applied to various types of accounts. For instance, from the article Hot Instagram Models League Is Waiting For You: Set Up The Promotion!
it is possible to learn a variety of sophisticated ways to gain popularity as an IG model.
But only real practice will show you in what way you should promote your own account and the interests of what types of users you need to take into consideration.
To cut the long story short, let me point out the main idea once again: the smaller audience you have, the wider your settings should be.
Nevertheless, the more followers you get, the more attentive you should be in your promotions. Analyze the results of your previous promos, see what settings ensure the highest conversion rates and apply them to your future campaigns.