Just noticed this and thought I would go into detail on ways you can utilize the tabs in it.
The Farming - Planning tab in the Companion has sections at the bottom for helping you figure out where to farm gear, relics, shards, and scrap from. It also has a Value column that compares how much currency it takes to your income of that currency to let you know which one you can easily get the most from. The higher the value the more of that currency you will have left over to get more or other things. You set your resource income on the Collection - Resource Income tab.
The Unit and Gear Lookup section at the bottom of the Planning tab lets you search all locations for specific items and see which place has best values to get them from. The location, level and cost lookups section let you look at all items in a specific store, by currency, or up to a specific player level to see what is avaliable and how the values for each item look. This is typically better than going through the Database sheets, although that is still an option.
Once you determine the places you want to get gear from, keeping gear crates from any events in mind, you would set them as favorite on the Database - Gear Location tab. After you have done this the locations will appear on the Farming - Gear tab so you can choose how much or many times to spend on them. It will then show you days to earn and have a total of all required resources. At the top of each section (Relic/Gear) it will have a breakdown of all required resources and comparisons with your current amount and average accumulation (based on Collection - Resource Income)