It's called rṣayadi nyāsa, also known as viniyogaḥ.
The points on the body are universal, but the gestures may vary depending on the teacher.
In Japa Kramaḥ, there are three different nyāsas.
1. rṣayadi nyasa
2. karanyāsa
3. ṣaḍaṅganyāsa
Guruji did not teach Japa Kramaḥ during the years I studied with him.
I learned this method from another teacher.
It's powerful, and there is a beautiful science behind it.
If it was not transmitted to you that way, it is not necessary.
It is my understanding that japa kramaḥ is samayachara.
You will also see the viniyogaḥ at the beginning of a stotram or kavacam.
For example, Durgā Saptaśhlokī
oṁ asya śrī-durgā-sapta-śhlokī-stotra-māha-mantrasya | nārāyaṇa ṛṣiḥ |
anuṣṭpādāni chandāsṁi | śrī-mahā-kali-mahā-lakṣmi-mahā-sarasvatyo-devatāḥ |
śrī jagadambā-prīyarthe pāṭhe viniyogaḥ ||
In this example, the bīja and kiīakam are not included, but you will see them in others like kaḍgamālā stotram.