Learn English – Description of an active person

The word is childless.

This is neither positive nor negative in tone, and does not imply whether the couple remains without children by choice or by some other circumstance (e.g. one partner might be sterile.)

It is not a single word, but in a business world, the term "skills management" is broadly used which means:

the practice of understanding, developing and deploying people and their skills. Well-implemented skills management should identify the skills that job roles require, the skills of individual employees, and any gap between the two.

People have different skills, knowledge and aptitudes, etc and managing them effectively and efficiently are the key to success. A good manager must have excellent "management skills" or "management capability" and "skills management" is one of the most important management skills.