Einsetzen
Einsetzen is a versatile German verb with several related meanings: to insert or place something into another object, to employ or deploy resources, methods, or technology, and to appoint or install someone in a position. In many contexts it overlaps with synonyms such as verwenden, nutzen, and anwenden. The act can refer to physical insertion as well as to the use or deployment of capabilities or personnel.
Grammatically, einsetzen is a separable verb. In the present tense the prefix is separated: ich setze das
Usage examples illustrate the range of senses: Ich setze das Werkzeug ein, um die Schraube zu lösen.
In relation to similar verbs, avoid confusion with aussetzen (to expose, to suspend) and beachten, thatsetzen