The phrase "an optional part of" is correct and usable in written English.
It can be used when describing something that is not mandatory and can be included or excluded at the discretion of the user or participant.
Example: "The user manual includes an optional part of the installation process that can be skipped if not needed."
Alternatives: "a non-essential component of" or "an elective section of".
Spiritual counseling has always been an optional part of the service.
Having an opposition is not an optional part of our parliamentary system, but a vital element of it.
In March 2000 Darwish was embroiled in Israel's "culture wars", when the education minister, Yossi Sarid, announced that five of his poems would be an optional part of a multicultural school curriculum - in a country where 19% of Israelis are Palestinian, and many Jews or their parents grew up in the Arab world.
An optional pattern includes only one group pattern as the child pattern that is considered an optional part of a query.
HCCA is an optional part of HCF that can guarantee QoS via resource reservation to fixed traffic flows of known resource requirements.
Breakfast is also an optional part of the LoveBox product for those who are feeling lucky (or just like to comfort eat in the morning).
The Bio-Tech program is an optional part (1 credit out of a total of 5 credits) of the Israeli matriculation examinations.
Our manager allowed this session as part of a bigger meeting, but an optional part, and probably 90% of the people still stayed, men and women, and they said it was useful to understand the grief process.
Nowadays, social competence training is often provided as an optional part in manuals for the therapy of social anxiety disorder and as a consequence, is often integrated into therapy [ 47– 47].
It mainly consists of two sections, viz, a compulsory part and an optional part.
The bit-stream of a scalable coder is composed of two parts: an essential part called the core unit and an optional part that includes enhancement units.
