India is the most diversified country. As such, it is highly likely that your 24 hours maid for home cooking comes from a different culture than yours. Cultural issues could be due to the region of origin and also due to the economic background. The issues could also differ depending upon whether you have hired a male cook or a female cook.
When a new Live-in cook/maid joins, she may or may not do things the way you expect. For example, the way she folds clothes or arranges utensils in the kitchen may be different from yours.
Try to understand the reason behind that. It could be because the cook is used to do it that way at her home. Or, it could be that her previous employer wanted her to do it that way. You have to explain to her that you want it to be done differently. If you also explain the reason behind the same, she will be more receptive.
You have to give the home cook some time to change her habits. It is important that you give her detailed instructions, for example, instead of asking her to microwave the daal, tell her which containers can be used in the micro-wave and that daal is to be microwaved for 1 minute.
If you are asking the cook to use an appliance, for example, a juicer, ask her if she has used it before. If she is not confident, you should demonstrate it first.
Lastly, if your full time cook has learnt something from her previous employer, it is possible that it is better than your method. Be open to accepting her way of doing things if that is more efficient.
The above guidelines are broadly relevant whether you are looking to hire in Delhi through an agency for cooks or directly through an online portal like JobNukkad.