Four things on a client's profile decide what numbers they are working to. Set them once, properly, and the rest of Workout Titan follows. Get them wrong and every number downstream is wrong with them.
Body metrics
Sex, date of birth, height and activity level. These exist to drive the calculators. They are inputs to a metabolic rate equation, not a profile.
Activity level is the one to get right, because each step is worth a few hundred calories a day. Pick it from what the client actually does in an ordinary week, rather than how busy the week feels. Someone with a desk job who trains three times a week is moderately active.
Height can be entered in centimetres or feet and inches. Switching units only changes how it is written, not the value.
Weight goal
A goal weight, a direction (lose, maintain or gain), and optionally a target date and a weekly rate.
One thing to know: if your client has never logged a weight, Workout Titan tells you there is no starting point to measure a target date against. Log one for them, or ask them to, before setting a date that cannot be worked out. "Logging weight and body measurements" covers how.
Calorie goal
One number, set as a daily or a weekly total. Weekly suits clients whose eating varies by design (shift workers, people whose weekends look nothing like their weekdays). It is also more forgiving in practice, because a high day counts towards the week's total rather than standing alone as a day that missed.
Macronutrient distribution
Carbohydrate, protein and fat, in grams or as a percentage of calories. Grams suit protein, where the target is usually tied to body weight; percentages suit the split between the other two, and move automatically if you change the calorie goal.
The setting applies to all three. You cannot mix grams for one and percentages for another.
Where these land
In Workout Titan Nutrition, if your client uses it. Their calorie and macro goals show as managed by their coach, and cannot be edited on their side while nutrition sharing is on. A number you set is a number they cannot correct themselves, which is a good reason to tell them what you set and why.
If they turn sharing off, the goals become theirs again and you stop seeing new logs. That is their switch, not yours.
The calculators are estimates
Workout Titan is explicit about this in its own methodology notes, and it is worth carrying into how you use them. An estimate is a starting point to track against and adjust from, not a prescription. For clients with health conditions or specific dietary needs, that is a conversation with a dietitian rather than an output from a calculator.