There are minyanim who self-identify as "partnership minyanim". Wikipdedia gives this definition of a partnership minyan:
[A] prayer group that is both committed to maintaining halakhic standards and practices and also committed to including women in ritual leadership roles to the fullest extent possible within the boundaries of Jewish Law. This means that the minyan is made up of 10 men, men and women are separated by a mechitzah, and the traditional liturgy is used. However, women may fully participate in kriyat ha'Torah (Torah reading), including layning (chanting the text) and receiving aliyot, and may lead parts of the prayer service such as psukei d'zimrah and kabbalat Shabbat, which do not contain d'varim she bikedusha.
In terms of praxis, what differentiates these minyanim from an ordinary Orthodox minyan? Which of these factors are ubiquitous among partnership minyanim and which only exist in some partnership minyanim? What justification is given for these differences?